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DESIGN PROBLEMS OF COLD FORMED
LIGHTWEIGHT ARK STRUCTURES
dr inż. Ryszard Walentyńskidr inż. Ryszard WalentyńskiFaculty of Civil EngineeringFaculty of Civil Engineering
Silesian University of TechnologySilesian University of TechnologyGliwice, PolandGliwice, Poland
LIGHTWEIGHT STRUCTURES in CIVIL ENGINEERINGWarsaw-Częstochowa, 3 December, 2004
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INTRODUCTION DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
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INTRODUCTION DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
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TECHNOLOGY DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
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TECHNOLOGY DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
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TECHNOLOGY DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
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TECHNOLOGY DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
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TECHNOLOGY DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
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BARRACKS DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
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ROOFS DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
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ROOFS DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
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ROOFS DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
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INSULATION DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
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ADVANTAGES DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
•Economics (>25% cheaper to traditional sol.)
•Column and lateral beam free
•Savings on material
•Savings on building site size
•Savings on time
•Easy construction
•Staff training
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ADVANTAGES DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
•Economics (>25% cheaper to traditional sol.)
•Column and lateral beam free
•Savings on material
•Savings on building site size
•Savings on time
•Easy construction
•Staff training
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ADVANTAGES DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
•Economics (>25% cheaper to traditional sol.)
•Column and lateral beam free
•Savings on material
•Savings on building site size
•Savings on time
•Easy construction
•Staff training
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ADVANTAGES DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
•Economics (>25% cheaper to traditional sol.)
•Column and lateral beam free
•Savings on material
•Savings on building site size
•Savings on time
•Easy construction
•Staff training
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ADVANTAGES DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
•Economics (>25% cheaper to traditional sol.)
•Column and lateral beam free
•Savings on material
•Savings on building site size
•Savings on time
•Easy construction
•Staff training
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ADVANTAGES DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
•Economics (>25% cheaper to traditional sol.)
•Column and lateral beam free
•Savings on material
•Savings on building site size
•Savings on time
•Easy construction
•Staff training
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ADVANTAGES DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
•Economics (>25% cheaper to traditional sol.)
•Column and lateral beam free
•Savings on material
•Savings on building site size
•Savings on time
•Easy construction
•Staff training
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DISADVANTAGES DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
•Durability
•Fragility
•Thermal insulation
•Fire resistance
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DISADVANTAGES DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
•Durability
•Fragility
•Thermal insulation
•Fire resistance
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DISADVANTAGES DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
•Durability
•Fragility
•Thermal insulation
•Fire resistance
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DISADVANTAGES DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
•Durability
•Fragility
•Thermal insulation
•Fire resistance
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REASONABLE APPLICATIONS DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
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Taking into account
ADVANTAGES and DISADVANTAGES
Good solution for temporary structures
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COMPUTER AID DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
Computer program COSMIC
written according to:
•American materials
•American conditions
•American standards
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COMPUTER AID DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
Computer program COSMIC
written according to:
•American materials
•American conditions
•American standards
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COMPUTER AID DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
Computer program COSMIC
written according to:
•American materials
•American conditions
•American standards
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COMPUTER AID DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
Computer program COSMIC
written according to:
•American materials
•American conditions
•American standards
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GUST RESPONSE FACTOR DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
Polish wind code PN77/B-2011
ASCE standard
1.8 (2.2)
~ 1.3
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COSMIC APPLICATION DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
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Initial cost estimation
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COMPUTATIONAL PROBLEMS DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
Required data:
•loads
•material properties
•geometric characteristic
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COMPUTATIONAL PROBLEMS DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
Required data:
•loads
•material properties
•geometric characteristic
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COMPUTATIONAL PROBLEMS DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
Required data:
•loads
•material properties
•geometric characteristic
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COMPUTATIONAL PROBLEMS DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
Difficulties in estimation:
•tension and bending stiffnesses
•load bearing capacity
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ASSESMENT OF PROFILE PROPERTIES DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
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Free supported statical scheme
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ASSESMENT OF PROFILE PROPERTIES DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
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Free supported statical scheme
Ark scheme
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OTHER DESIGN PROBLEMS DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
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Maximum span (MIC240):
•advertisement – up to 36 m
•Author’s judgement – 20-24 m(depending on loads and ark arrow)
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OTHER DESIGN PROBLEMS DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
Maximum span (MIC240):
•advertisement – up to 36 m
•Author’s judgement – 20-24 m(depending on loads and ark arrow)
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FINAL REMARKS AND FURTHER WORK DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
•hesitations based on experience
•lack of academic references
•proposal of experiment
•$$$
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FINAL REMARKS AND FURTHER WORK DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
•hesitations based on experience
•lack of academic references
•proposal of experiment
•$$$
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FINAL REMARKS AND FURTHER WORK DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
•hesitations based on experience
•lack of academic references
•proposal of experiment
•$$$
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FINAL REMARKS AND FURTHER WORK DESIGN PROBLEMS OF COLD FORMED LIFGTWEIGHT ARK STRUCTURES
R. Walentyński
•hesitations based on experience
•lack of academic references
•proposal of experiment
•$$$
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Thank you for your kind attention
DESIGN PROBLEMS OF COLD FORMED
LIGHTWEIGHT ARK STRUCTURES
Ryszard WalentyńskiRyszard Walentyńskirwal@kateko.bud.polsl.gliwice.plrwal@kateko.bud.polsl.gliwice.pl
LIGHTWEIGHT STRUCTURES in CIVIL ENGINEERINGWarsaw-Częstochowa, 3 December, 2004
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